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Finding the Fourth Proportional to 8,458.92, 12,684.45 and 4,509.18

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Solution

The fourth proportional to 8,458.92, 12,684.45 and 4,509.18 is: 6,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.92 : 12,684.45 = 4,509.18 : x
  2. Step 2: Convert to fraction form
    8,458.92/12,684.45 = 4,509.18/x
  3. Step 3: Cross multiply
    8,458.92x = 12,684.45 × 4,509.18
  4. Step 4: Simplify right side
    8,458.92x = 57,196,468.25
  5. Step 5: Solve for x
    x = 57,196,468.25/8,458.92
  6. Step 6: Final answer
    x = 6,761.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.